CVE-2012-4900Public exploit

Application crash via partially controlled destination pointer

Published Jan 23, 2020 · Updated Aug 6, 2024

Untrusted pointer dereference in Corel WordPerfect Office X6 16.0.0.388 allows attackers to crash the application with a malicious WPD file. In WPWIN16.DLL's STARTAPP function, crafted document data modifies the stack and partially controls the destination pointer passed to MSVCR80's STRNICMP procedure. A user must download and open the file; exploitation immediately terminates WordPerfect and discards unsaved application data.

CVSS severity5.5
Medium
EPSS probability2.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted pointer dereference in Corel WordPerfect Office X6 16.0.0.388 allows attackers to crash the application with a malicious WPD file. In WPWIN16.DLL's STARTAPP function, crafted document data modifies the stack and partially controls the destination pointer passed to MSVCR80's STRNICMP procedure. A user must download and open the file; exploitation immediately terminates WordPerfect and discards unsaved application data.

The record

CVE
CVE-2012-4900
Published
Jan 23, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-822, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 23, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.6High-Tech Bridge Security Research LabAV:N/AC:H/Au:N/C:N/I:N/A:P
5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
4.3NIST National Vulnerability DatabaseAV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-822Untrusted Pointer Dereference
T1204.002User Execution: Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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